CDI Modification

[yz250htj]

OK to cut CDI or purchase after market Kymco rated performance CDI
Any potential problems through this mod to engine ?

[Bray0671]

Cut CDI just did mine got 5-7 mph out of it!

[LewisKA50]

Cut CDI just did mine got 5-7 mph out of it!

Do you just have to cut it and that's it? Or do you have to change something's?

Cheers.

[blue]

You will have to change out the drive boss and a bigger main jet.

[LewisKA50]

You will have to change out the drive boss and a bigger main jet.

I see, is that expensive?

[Bagel]

I'm new to this jus got me a kymco yesterday an want to derestrict it got a lot of information from here where can I purchase new drive boss an bigger jet from and is there any other restricters on it that need to come off

[streido]

I'm new to this jus got me a kymco yesterday an want to derestrict it got a lot of information from here where can I purchase new drive boss an bigger jet from and is there any other restricters on it that need to come off

Any scooter or decent bike shop should sell them,there are loads online or ask your localkymco dealer for the parts,most stock them. Dont cut the cdi without 1st doing the boss and jet.

[blue]

I see, is that expensive?

Mine came with the bike so I was lucky but I also went up to a bigger jet I have a 85 now.

[Bagel]

What will it do if i cut the cdi without replacing the jet and boss first

[woodcutter]

engine is gonna be in high revs, top speed will probably remain the same, belt wear will increase and mixture could be lean but uphill will be better.
higher revs require more fuel, so, smooth drive boss, 82 jet and then cdi cut. Just my advice 

[blue]

engine is gonna be in high revs, top speed will probably remain the same, belt wear will increase and mixture could be lean but uphill will be better.
higher revs require more fuel, so, smooth drive boss, 82 jet and then cdi cut. Just my advice 

x2 all 3 must be done. Call the dealer and see if they have theam mine did.